I have been shooting with the Canon eos 1ds mark 3 for awhile now and I love it! But I recently got my b&h catalog in the mail and they don't even list it/sell or market it online anymore. Which makes me question, is it still the best or has canon come out with a newer version to replace it? Just curious on what everyone thinks and if I am now behind the game?

The replacement is the Canon 1D X. It's slightly lower resolution at 18 megapixels instead of 21 and image quality is fairly similar at iSO 100. However, in almost every other respect it's a much superior camera, faster, more responsive, amazing high ISO, more full featured. If you're a studio shooter no need to worry about upgrading, however if you shoot action/events/location/etc, it's well worth a look. I upgraded from the 1Ds III to the 1D X and am very glad I made the switch (although it's an expensive upgrade).

The 1ds3 is still a great camera and my workhorse. Would I like a 1Dx - yes. Can I really justify it for the work I do - no. If you have the need of the improvements go for it, but otherwise your existing camera will probably keep going for a while longer. The industry is geared up to make us feel dissatisfied with what we have and I sometimes think it would be better not to read gear reviews etc. I have two GH2's which are great - but now they have gone and brought out a GH3 - damn!

I've been shooting with 1ds3's since they came out and have also wondering what next.Will also admit that I hadn't seriously considered the 1Dx because of it's slight drop in resolution while everything from Nikonseems to be doubling..

Anyway, for the last few days I've had a loan 1Dx and would agree it's a big step forward over it's ageing parent.The high ISO performance is awesome and while I would limit low light shooting to around 1000 ISO on the 1DS3, the X is still kicking it well above 3200..

I have shot with Canons and medium format digital, as well as larger MF film and 8x10.I used Canon for many years starting with the 1ds. While I liked the cameras and the stellar reliabilityI just got tired of waiting for dynamic range improvements.The D800 made a big jump in dynamic range as well as res and general image qualitythat not only did I stop using my Canons, but I also pretty much stopped usingmy Phase One MF cameras that I soon sold with no regrets at all. Actually quitehappy to get rid of the crappy Phase one bodies. The D800 has better dynamic range thanmy MF back.

Now I shoot pretty much only with the D800 for digital and shoot 6x8cm and 8x10 film.

The D800 does not quite have the beefy body of the various 1Ds bodies I have had.